US Bridges

I-15 (SR-15) Nbl over CO RD to Kanarraville

Fair

Iron County, Utah · No Kanarraville Interchg. · Structure no. 1D 753

Built
1966
59 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
34,474
2017 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Nbl over CO RD to Kanarraville is a concrete continuous tee beam carrying I-15 (SR-15) Nbl over CO RD to Kanarraville in Iron County, Utah. It was built in 1966, so it is 59 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 34,474 vehicles a day, roughly 44% of them trucks, projected to reach 41,369 by 2037. The structure is 110 ft (33.5 m) long and 40 ft wide.

Location

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CarriesI-15 (SR-15) Nbl
CrossesCO RD to Kanarraville
LocationNo Kanarraville Interchg.
RouteInterstate 15
CountyIron County
StateUtah
Coordinates37.60222, -113.16139
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating48.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length110 ft (33.5 m)
Longest span40 ft (12.3 m)
Deck width40 ft (12.1 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,474 (2017)
Projected traffic41,369 by 2037
Trucks44%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-15 (SR-15) Nbl over CO RD to Kanarraville built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-15 (SR-15) Nbl over CO RD to Kanarraville in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does I-15 (SR-15) Nbl over CO RD to Kanarraville carry?

About 34,474 vehicles per day (2017 count), of which roughly 44% are trucks.

How long is I-15 (SR-15) Nbl over CO RD to Kanarraville?

The structure is 110 ft (33.5 m) long with a longest span of 40 ft (12.3 m) and a deck 40 ft wide.

Who owns I-15 (SR-15) Nbl over CO RD to Kanarraville?

It is owned by the State Highway Agency.